曾經有大學數學教授跟熊娃說，線性代數值得學三次。記得他不是說學三門課，不知道是不是一回事

来源: 喀爾判0715 于 2025-07-24 13:02:24 [旧帖] [给我悄悄话] 本文已被阅读：次

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